The key moment in the third game seems around move 168 of white. With this move
white decides to save the cutting stones in the center because following the
alternative as in the first diagram seems to give black a win in points.
With 169 black could have compromised as in the second diagram. Both marked groups
are captured, leaving a rather simple endgame with a slight margin for black.
White probably will continue C (to remove the A, C, D cut), which enables black
to take the big point at B.
However, both players like complications (for different reasons) so the game
took a completely different course from here...